Programmatically add custom event in the iPhone Calendar

Is there any way to add iCal event to the iPhone Calendar from the custom App?

Using EventStore, can I create a new iCal calendary type?

So in my app I rely heavily on iCal, and I can add events using EventStore, but only to the "defaultCalendarForNewEvents". I want to make a new calendar just for the events I create in the app, let's say MyApp calendar, which would behave much like the iCal calendars like "Home", "Work", etc.